My child wore this once for a dance performance. While I don't see any noticeable stains, please refrain from purchasing if you are overly concerned, as this is a personal inspection. There is no tag, so I don't know the fabric or size, but it is not cotton. Length 60cm, Width 57cm, Shoulder Width 54cm, Sleeve Length 52cm. Reduced from 890 yen to 790 yen.